#include	<stdio.h>
#include	<sys/types.h>
#include	<dirent.h>

void do_ls(char []);

int main(int argc, char *argv[])
{
	if ( argc == 1 )
	do_ls( "." );
	else
	while ( --argc ){
			printf("%s:\n", *++argv );
			do_ls( *argv );
		}													return 0;													}

															void do_ls( char dirname[] )
															{
																DIR		*dir_ptr;		
																	struct dirent	*direntp;		

																		if ( ( dir_ptr = opendir( dirname ) ) == NULL )
																				fprintf(stderr,"ls1: cannot open %s\n", dirname);
																					else
																						{
																								while ( ( direntp = readdir( dir_ptr ) ) != NULL )
																											printf("%s\n", direntp->d_name );
																													closedir(dir_ptr);
																														}
																														}

